SKU : AK-SII6-EOSXL
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Clip-Filters:
Clip-in EOS XL filters are for these Canon Full-Format Cameras: 5D Mark II, 5D Mark III, and 6D Mark I. (5D Mark I will work without LiveView only)
The Astronomik XL Clip filterswill not workwith the Canon 6D Mark II, 5DS, 5DSR, the 5D Mk IV camera bodies, and will only work without LiveView in the Canon 5D Mk I.
Product Details
Astronomik 6 nm S-II MFR Narrowband Emission-line Filter
Canon EOS Full Format XL Clip.
Astronomik SII Narrowband Filters are suitable for false color imaging of emission nebulae emanating singly ionized sulfur. The contrast between an object glowing at 672 nm and the background is increased significantly due to the high transmission and effective out-of-band blocking!
The SII line (672 nm) is in the deep red portion of the spectrum, beyond H-alpha.
This Astronomik SII MFR Narrowband filter has a 6 nm FWHM (Full Width at Half Maximum) coating. The extra narrow bandpass of 6 nm filters are most appreciated with cameras that offer extremely low dark current and good cooling, or when imaging in areas with severe light pollution. The higher level of out-of-band blocking allows you to take longer exposures and choose objects embedded in normally over-bright, crowded areas of the Milky Way. Extra blocking causes faint stars to disappear from the background, and brighter stars will be pin-pricks of light.
Images: The EOS XL clip image is shown for the clip with a different filter/color. This filter has the same filter as seen in the image of a 1.25-inch filter. Your filter will be the "red glass" in an EOS Full Format XL Clip.
Astronomik MFR Narrowband Emission Line Filter Highlights
Ten Year Warranty! Astronomik filters will last for many years without degradation of the coatings, due to the quality of the substrate and coatings used. The high-quality glass is optically polished and is free of stress and striae. The coatings used on Astronomik filters are applied in multiple layers, making the resulting filter scratch resistant and unaffected by moisture or aging that some filters of less quality may be prone to. Astronomik filters are also parfocal due to the small thickness tolerance allowed. Astronomik backs up this quality with a ten-year warranty.
The major emission lines of artificial light pollution:
| Hg 435.8 nm | Hg 546.1 nm | Hg 577.0 nm | Hg 578.1 nm |
| Na 589.0 nm | Na 589.6 nm | Na 615.4 nm | Na 616.1 nm |
The major emission lines of nebulas:
H-β 486.1 nm | OIII 495.9 nm | OIII 500,7 nm | H-α 656.3 nm
specifications
Bandpass | 6nm |
Filter Shape | Canon Full Frame |
Filter Thickness | 1mm |
Filter Type | SII |
Free Shipping | Yes |
Shape | Canon EOS XL |
included items
Clip-Filters:
Clip-in EOS XL filters are for these Canon Full-Format Cameras: 5D Mark II, 5D Mark III, and 6D Mark I. (5D Mark I will work without LiveView only)
The Astronomik XL Clip filterswill not workwith the Canon 6D Mark II, 5DS, 5DSR, the 5D Mk IV camera bodies, and will only work without LiveView in the Canon 5D Mk I.